Motor vehicle



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MORHOUSE MOTOR VEHICLE Filed Oct. 30, .1920 5 Sheets-Sheet 1 0 0 G 0 O 0l MOIVJOM@ Aug. m was.,

MOTOR V EHI CLE 1920 Sheetsj-Shea zeA Filed Oct; 30

A. MOOLQHOUSE.

MOTOR VEHICLE mg.- m w25, Y www Filed 0mm., 1920 3 sheets-sham sS14/venia@ Patented Aug. 1s., 192s.`

UNITED STATES P ALFRED MOOBHOUSE, OF DETROIT, MICHIGAN, ASSIGNOR TOPACKARD MOTOR CAB,-y

1,550,091 ATENT "oF-FICE.

COMPANY, I"v DETROIT, MICHIGAN, A CORPORATION' OIF-MICHIGAN.

Moron VEHICLE.'

App'ication filed October 30, 1920. Serial No. 426,636.

To all whomrt may concern:

Beit known lthat I, ALFRED Mo'oRI-rousn, a citizen of the United States,and resident v of Detroit, Wayne County, State of Michigan, haveinvented certain new and use ful Improvements in Motor Vehicles, ofwhlch the following is a speciiication. A

This inventiony relates to motor vehicles, and particularly tothe changespeed mechanism thereof.

The principal object of the invention 1s to provide achange- Speedmechanism auxiliary to the usual F'speed changing'gear box 4for thepurpose of providing an `additional speed ratio, which preferably is ofsuch a fnature as to reduce the speed of the axle and obtain greaterpower.- The lnventlon aims to attain the above object by means whichavoid the necessity of providing an eXtra shaft carrying `the additionalchange speed gears. A

Another object of the invention is to provide a construction in whichone of the members-of a universal joint in the driving shaft line isemployed as the driven element for the change speed mechanism.

Another object' of the invention is to provide means whereby the housingcontaining the attachment is so mounted as to have a f pivotal movementwith respect to the `frame,

thus accommodating the attachment to the weaving of the frame andavoiding the ne.- cessity 'of an extra universal joint between thepartspf'the attachment and the frame.

Another object ofthe invention is to provide a construction adapted forthe above purposes, which shall be readily attachable tol and detachablefrom a motor. vehicle of existing construction and otherwlseconventional ty e.

With t ese objects and others in view, the

inventionis embodied in preferable form in.

the construction and arrangement hereinafter' described and illustratedin the accompanying drawings. I

In'these drawings A Figure 1 is a top plan view of part of a motorvehicle, showmg the location and eX- i terior form of the unit assemblycontaining the-invention; l

Figure 2 is a transverse sectional view of the construction shown inFig. 1, the unit assembly being shown in end elevation;

Figure 3 is anenlarged vertical, longitumechanism 19. a spider 17 whichis keyed on a shaft 18.

dinal section of the auxiliary gear boX; and 'Figures 4, 5 and 6 aredetail sectional views taken respectivelyon lines 4 4, 5-5 and 6-6 onFig. 3.

Referring to the drawings, 10 indicates the side members of the motorvehicle frame and 11 is a cross tube or bar formed in two aligned andseparated parts which are separately fixed to the side members at apoint between the main transmission and the rear axle. Mounted on theinner ends of this cross tube is a housing comprisingtwo parts 23 and 52held together by means of bolts 23. The housing has side hub portions 12which are split as at 13y and these hub portions surround the tube parts11. Bolts 14 clamp the casing to the' tube parts leaving V1tsuiiiclently loose if desired so that-it may outinterfering with any ofthe other parts of the frame.

This housing carries brake shoes 15, one on each side of the cross tube,and these shoes are adapted to bear on brake drums 16, 16" and the shoesare actuatedby lever The drum 16` is secured to The shaft '18eonstitutesthe change s eed mechanism shaft, and it is detachable' romthe main driving shaft line. It is connected rigidly to a main shaftline section 19, by means of said spider 17, and a similar spider 17which is boltednto the spider 17, and xed to said shaft section 19. The

drum 16 at the opposite end of the assem bly is secured to a spider 20,which forms one member of a universal joint 21.

A ring gear 22 is xed to the housing section 23 and has teeth 25. Aretainer 26' is adapted to retain the ball bearings'27,`

against which the inner end of al collar 28 v of the spider 17 isadapted to bear/ ed to rotate freely on the shaft 418 29, which iscapable of sliding` -Mount- S? gear ovement on said shaft, and may beoperated to e'ectsuch movement by means"of a forked arml 30,V entering agroove 31 formed in' saidy gear.

Said fork is carried by a shifting bar 32, which is adapted to beoperated by a lever 33, which in turn may be controlled by a hand shiftlever, not shown. The gear wheel 29 is provided with an extended hub l Nare gotnaaaled m, a carrier duction in speed to any speed obtained meshi th members 37.

eers 3'( constitute the planet gears and the anemia 4Q, thering gear ofan epicyclic vsteinl r@he planet gears .3i are finointed onstub shaftsYi-1, wlnahnin turn 42, which is bolted to an annular member 43 by boltsAist. ilhe messbar' is in turn secured by bolts 45 lto the flange 46,forming part of the shaft 18. An internal gear 17 is fixed to the membera3, and is adapted to mesh with the gear 29 when' the latter is shiftedto the left. The ring gear 40 has a Hangs which is bolted to the spider20, which in turn is journaled on the shaft 18, but connects to the mainShaft line through the other member of the` universal joint. Bearings 49are located between the cylindrical sleeve 50 of the spider and theretainer member 51, which is secured to a. housing section-52 attachedto the housing section 28, these two sections forming the housing forthe planetary geargThis auxiliary change speed mechanismv isparticularly designed for imparting a 11p- Y the usual transmission.Referring to the operation of the construction, in Fig. 3 a controllinggear 29 is shown in neutral position, that is, neither in mesh with gear25 nor gear 47, but in mesh through teeth 35 with the planet gears 36.`When the gear 29 is shifted to the right or toward the engine, it willengage the internal gear 25, Which is fixed tothe housing, thereupon thegear 29 will be held against rotation and constitute the fixed centralgear of the epicyclic system. Consequently the planet gears 36 Will berotated around their axes, and thus rotate the ring gear 40, which inturn will drive the universal joint member 20 at a speed reduced fromthat of a main drive shaft section 18.

Since these gears and the shift lever are entirely independent of themain change speed mechanism, it will be seen that the reduction providedby the auxiliary device may co-act with any speed ratio established bythe main transmission so that at any speed of the driving shaftadditional power may be applied to the axle for any desired purpose,such as to produce increased traction in driving through sand or mud orunder an extra heavy load.

When the gear 29 is shifted from neutral to the left into engagementwith the gear 47, which -is carried by the member 43 attached tothe arm46, which in turn is fixed to the shaft 18, then the drive will bethrough the driving shaft 18, member ,43,

gear 2t), gear teeth 35, lil and universal i i' vention, it will beunderstood that the inlvention is capable of modification and thatchanges in the construction and in the arrangement ofthe cooperatingparts may be made without departing from the spirit or scope of theinvention as expressed in the following claims.

Having thus described my invention, what I claim and desire to secure byLetters latent is:

1. In a motor vehicle, the toi-nbination with the frame thereof having across 111cmber, of a change speed gear casing pivotally mounted on saidmember, change speed mechanism in said easing, a driving shaft extendinginto one end of said casing and connectedto said mechanism, and a driven.shaft from said mechanism extending through the other end of thecasing.

2. ln a motor vehicle, in combination with a divided main driving shaft,and an auxiliary change speed mechanism mounted in the main shaft line,and including a housing having clutch teeth, a shiftable gear freelymounted on` one part of the driving shaft and having teeth to engagesaid housing teeth, a clutch fixed to the shaft and adapted forengagement with said shiftable gear, a planet'gear having constant meshwith said shiftable gear, a ring gear engaging said planet gear, auniversal joint member on another separated part of the shaft and fixedto said ring gear.

- 3. In a motor vehicle, in combination with a divided main drivingshaft, an auxiliary change speed mechanism located at the divisionbetween said parts of the driving shaft and including a secondary shaftxed to the main driving shaft and constituting the driving element ofsaid auxiliary mechanism, a universal joint in the main shaft includingra member which is the driven element of said auxiliary mechanism, ahousing for said auxiliary mechanism, a support vehicle for said housingand a pivotal connection between said housing and support. 4. ln a motorvehicle, in con'ibimltion, a driving shaft, and an assembly adapted formounting as a unit upon the vehicle, and comprising a change speedmechanism and brake drums for the shaft surrounding the mechanism.

5. In a motor vehicle,transmission mechabrake druln secured to each ofsaid shafts,

nism including driving and driven shafts, a

. and change speed gear mechanism interposed between said shafts andwithin said brake drums.

6. In a motor vehicle, transmission mechanism including driving 'anddriven shafts, oppositely extending brake drums secured to said shaftsand change speed gear mechanism connecting said shafts and disposed.

within said brake drums.

7. In a motor vehicle, a frame, transmission mechanism including drivingand driven shafts, av housing pivotally mounted on said frame, changespeed mechanism connecting said shafts and dis-posed'in said housing andbrake mechanism carried by said shafts and extending over said changespeed mechal msm. y

8. In a motor vehicle, aligned driving and driven shafts, transmissionmechanism connecting said shafts, spiders secured to said' shafts, andbrake drums secured tothe spiders having flanges enclosing the transmis-A sion mechanism.

